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Hannah Jaenicke

Executive Secretary 

Detlef Virchow

External Advisor

Christine Husmann

Research & Management

Jochen Dürr

Project Coordination 

Anna Spiller

Website Management



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The Global Horticulture Initiative Secretariat is based at the Center for Development Research in Bonn, Germany since January 2014. Before it had its office at AVRDC - The World Vegetable Center Africa (AVRDC-RCA) in Arusha, Tanzania from August 2007 to December 2010 and at The Food and Agriculture Organization of the UN (FAO) in Rome, Italy from 2011 to 2013.

Secretariat Staff

Dr. Hannah Jaenicke is the acting Executive Secretary, stepping in after Detlef Virchow‘s departure. Hannah has extensive experience in the field of international horticulture, both as a researcher and manager. She has a doctorate in plant physiology and followed a career in international development with over 20 years' experience in Africa and Asia, focussing on plant propagation, genetic resources, agrobiodiversity and nutrition. From 1992-2001 Hannah worked on the propagation of African indigenous fruit trees at the World Agroforestry Centre (ICRAF), from 2001-2005, as Deputy Manager of the UK Forestry Research Programme, she was involved in the technical and administrative management of numerous multi-disciplinary research and development projects and 2005-2010 she was the Director of the Internactional Centre for Underutilised Crops (ICUC). She is currently the Coordinator of the German Horticultural Competence Centre, KoGa.


Hannah is also active in the International Society for Horticultural Science, as the Chair of the ISHS Commission for Plant Genetic Resources 2010-2014 and currently as the Vice-Chair of the Section Tropical and Subtropical Fruits. She is also a member of the Board of the Tropical Fruits Network (TFnet).


Detlef Virchow

The previous Executive Secretary of GlobalHort was Dr. Detlef Virchow. Detlef Virchow holds a PhD in agricultural economics from the Christian-Albrechts University of Kiel (Germany). He worked as the Executive Manager of the Food Security Center, University of Hohenheim (Germany), the Director of the Regional Center for Africa of AVRDC-The World Vegetable Center in Tanzania, as a Senior Project Manager at InWEnt - Capacity Building International (Germany), as a senior research fellow at the Center for Development Research ZEF-Bonn (Germany), and as Head of the agricultural department of the Evangelical Lutheran Church of the Democratic Republic of Congo. Besides working as Executive Secretary for GlobalHort, Detlef was coordinating a research program “Improving food security in Africa through increased system productivity of biomass-based value webs (BiomassWeb)” at the Center for Development Research ZEF-Bonn. His research areas are food security, rural and regional development, horticulture for development as well as natural resource management. Detlef has moved on to a new challenging position at Plan International Germany and now serves as External Advisor to GlobalHort.

Christine HusmannDr. Christine Husmann (on maternity leave) works in the areas of research and project management. Christine studied geography, economics and sociology in Trier (Germany), Valencia (Spain) and Tübingen (Germany). Christine did her PhD at the Center for Development Research (ZEF) in Bonn (Germany) where she worked on poverty and marginality and the role that the private sector can play in reducing poverty by providing improved agricultural inputs to poor people in rural Ethiopia. 

Dr. Jochen Dürr joined GlobalHort on March 15th, 2016 as project coordinator of NutriHAF. He comes from Tübingen, Germany, and holds a Master degree in agricultural economics from the University of Hohenheim and a PhD degree in economics from the Faculty of Organic Agricultural Sciences/University of Kassel, Germany. His PhD-thesis is on “The contribution of agriculture to economic development in Guatemala”. During five years he worked for the German Development Cooperation at the Federal University of Pará, Brazil, and another five at the Guatemalan Institute of Agrarian and Rural Studies (IDEAR). Throughout these years he conducted extensive field research, (co)authored a series of books and articles, and worked closely with peasant organizations and movements. His main research areas are rural development, value chains and agricultural policies from a critical political economy perspective.

Anna Spiller, a Master student of Agricultural Sciences and Resource Management at the University of Bonn, is responsible for updating and organizing the content of the GlobalHort website. She holds a B.Sc. in International Environment and Development Studies from the Norwegian University of Life Sciences and was involved in research projects of the Ashoka Trust for Research in Ecology and the Environment (ATREE) in India, la Fundación Acctión Social Cáritas (FASCA) in Ecuador and the NGO Rupantaran Nepal. She is currently conducting research on Community Gardens in Washington D.C. and has a strong interest in horticulture for environmental education.

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